What Does Analog Mean?
Analog, in the context of technology, refers to signals derived from physical phenomena that also may be interpreted as signals representing physical measurements. Light or visual input, for example, is an analog signal, so to capture video, its analog signal must be scanned and then translated into fluctuating electronic pulses.
Techopedia Explains Analog
Analog was the only mainstream device choice until quite recently, when digital device technology became cheaper and easier to manufacture. Although inexpensive and easy to use, analog technology’s downside is its limited data holding capability.